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Sloan [31]
3 years ago
11

What is the wavelength of a light of frequency 6.42 x 1014 Hz?

Chemistry
1 answer:
Dahasolnce [82]3 years ago
8 0

Answer:

467 nm is the answer

Explanation:

IT'S the answer for

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- It's density increases

- mass increases

- volume increases

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2 years ago
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How do plants and animals help to maintain a balance of carbon dioxide in the atmosphere
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In caves, dripping groundwater containing calcium bicarbonate can form stalactites and stalagmites. When the water is exposed to
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3 years ago
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Sn + 2 H2SO4 → SnSO4 + SO2 + 2 H2O If 219.65 grams of SnSO4 are produced, how many moles of H2SO4 were reacted?​
anygoal [31]

Answer:

2.05moles

Explanation:

The balanced chemical equation in this question is as follows;

Sn + 2H2SO4 → SnSO4 + SO2 + 2H2O

Based on the above equation, 2 moles of H2SO4 reacted to produce 1 mole of SnSO4

However, the mass of SnSO4 produced is 219.65 grams. Using mole = mass/molar mass, we can find the number of moles of SnSO4 produced.

Molar mass of SnSO4 where Sn = 118.7, S = 32, O = 16

= 118.7 + 32 + 16(4)

= 150.7 + 64

= 214.7g/mol

mole = 219.65/214.7

mole = 1.023mol

Therefore, if 2 moles of H2SO4 reacted to produce 1 mole of SnSO4

1.023 mol of SnSO4 produced will cause: 1.023 × 2/1

= 2.046moles of H2SO4 to react.

8 0
3 years ago
Why are the average atomic masses of some of the elements in parentheses?
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Because its only representing the most stable isotope of that element but its considered the atomic mass and not average atomic mass
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3 years ago
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